Measurement Gap Configuration for Faster 5G NR Cell Switching
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Solution Overview
Problem
In 5G new radio communication systems, particularly in FR2 scenarios, the long switching delay during cell switching due to layer 3 measurements affects throughput and mobility performance, especially in small cell coverage areas.
Innovation Solution
A method for transmitting measurement configuration information that includes configuring measurement gaps for user equipment to perform power measurements on layer 1 reference signals, allowing for efficient neighbor cell measurements and reducing switching delays through network device-controlled measurement gap configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If layer 3 measurements are used for cell switching, then measurement accuracy is improved, but switching delay increases
Solution Approach 1:
The patent performs layer 1 reference signal power measurements in advance during measurement gaps before cell switching is needed. This preliminary measurement of neighbor cells allows the UE to have measurement results ready, reducing the switching delay while maintaining accuracy through the subsequent layer 3 measurement process.
Solution Approach 2:
The patent divides the measurement process into two stages: layer 1 quick measurements during measurement gaps for rapid assessment, and layer 3 measurements for final decision-making. This segmentation allows the system to benefit from both fast initial assessment and accurate final measurement, reducing overall switching delay.
2Productivity
If measurement gaps are configured for neighbor cell measurements, then measurement efficiency is improved, but service transmission time is reduced
Solution Approach 1:
The patent implements periodic measurement gaps at configured intervals rather than continuous measurements. This periodic approach allows the UE to perform neighbor cell measurements at specific times while maintaining service transmission during non-gap periods, balancing measurement efficiency with service continuity.
Solution Approach 2:
The measurement gap configuration is dynamic and can be adjusted by the network based on mobility conditions. When mobility is detected or conditions change, the network can configure measurement gaps adaptively, allowing the system to optimize between measurement needs and service transmission requirements in real-time.
Data Source
AI summary
A method, non-transitory computer-readable media, and system for managing measurement configuration in wireless communication is disclosed. The method, performed by user equipment, includes receiving measurement configuration information from a network device that specifies measurement gap configurations for a serving cell and optionally for candidate cells. The user equipment performs power measurements on reference signals for candidate cells based on these configurations, enabling optimized signal assessment during defined measurement gaps. The method also incorporates threshold-based triggering for measurements and reporting, activation or deactivation of measurement gaps via control signaling, and timing measurements between serving and candidate cells to refine configuration. The methods, apparatuses and non-transitory computer-readable media, enhance efficiency in network handovers and power management in wireless communication systems.